Is the OLED screen worth it on this laptop?

Yes if you watch video, edit photos or read a lot. The OLED panel gives much deeper blacks and better contrast than the LCD screens common on budget and mid-range 14-inch laptops.

Can I upgrade the RAM and storage?

Storage is usually easier: the SSD can be swapped for a larger drive. Memory on thin OmniBook models is often soldered, so buy the RAM you need up front rather than planning an upgrade.

Is it good for gaming?

Only for light and older titles. The Intel Core 5 uses integrated graphics, so modern games will run at low settings and frame rates.

How does it compare with the OmniBook X or Spectre?

The OmniBook 5 is the value line: same OLED appeal, but fewer premium materials and less memory and storage. The Spectre and OmniBook X lines add stronger builds, more RAM and longer battery life.

Does the touchscreen work with a stylus?

It supports capacitive styluses for notes and drawing, but it is not a pressure-sensitive pen display. For serious sketching, a laptop with active pen support is the better fit.